PT-2025-27813 · Unknown+1 · Masseditregex Extension+1

Somerandomdeveloper · Published 2025-07-03 · Updated 2025-07-04 · CVE-2025-53500

Positive Technologies (AI Summary)

CVSS v3.1

5.6

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions: Mediawiki - MassEditRegex Extension versions 1.39.X through 1.39.11 Mediawiki - MassEditRegex Extension versions 1.42.X through 1.42.6 Mediawiki - MassEditRegex Extension versions 1.43.X through 1.43.1

Description: The issue is related to Improper Neutralization of Input During Web Page Generation, also known as Cross-site Scripting (XSS). This allows for Stored XSS in the Mediawiki - MassEditRegex Extension.

Recommendations: For versions 1.39.X through 1.39.11, update to version 1.39.12 or later. For versions 1.42.X through 1.42.6, update to version 1.42.7 or later. For versions 1.43.X through 1.43.1, update to version 1.43.2 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-53500

Affected Products

Masseditregex Extension

Mediawiki

References · 7

• 🔥 https://phabricator.wikimedia.org/T397334 · Exploit
• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/MassEditRegex/+/1163878 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-53500 · Security Note
• https://osv.dev/vulnerability/CVE-2025-53500 · Vendor Advisory
• https://t.me/cvenotify/127643 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1940952390305226957 · Twitter Post
• https://twitter.com/CVEnew/status/1940815287521009735 · Twitter Post